Volume 8, Number 3, 2021 | Academic Journals and Conferences

Obituary of Yarema Savula

Author index of vol.8, no.3 (2021)

In this Number

(20 papers)

On approach to determine the internal potential and gravitational energy of ellipsoid

Mykhailo Fys, Andrii Brydun, М. I. Yurkiv

DOI: https://doi.org/10.23939/mmc2021.03.359

pp. 359–367

Asymptotic analysis of the Korteweg-de Vries equation by the nonlinear WKB technique

S. I. Lyashko, V. H. Samoilenko, Yu. I. Samoilenko, N. I. Lyashko

DOI: https://doi.org/10.23939/mmc2021.03.368

pp. 368–378

Quasi-maximum likelihood estimation of the Component-GARCH model using the stochastic approximation algorithm with application to the S&P 500

A. Settar, N. I. Fatmi, M. Badaoui

DOI: https://doi.org/10.23939/mmc2021.03.379

pp. 379–390

Modeling the reinforced concrete shell with a protective structure

I. I. Karhut, O. V. Krochak, S. B. Maksimovich

DOI: https://doi.org/10.23939/mmc2021.03.391

pp. 391–399

A new geometrical method for portfolio optimization

F. Butin

DOI: https://doi.org/10.23939/mmc2021.03.400

pp. 400–409

Asymptotic stepwise solutions of the Korteweg-de Vries equation with a singular perturbation and their accuracy

S. I. Lyashko, V. H. Samoilenko, Yu. I. Samoilenko, I. V. Gapyak, M. S. Orlova

DOI: https://doi.org/10.23939/mmc2021.03.410

pp. 410–421

Mathematical modeling of centrifugal machines rotors seals for the purpose of assessing their influence on dynamic characteristics

S. S. Shevchenko

DOI: https://doi.org/10.23939/mmc2021.03.422

pp. 422–431

On the existence, uniqueness and computational analysis of a fractional order spatial model for the squirrel population dynamics under the Atangana-Baleanu-Caputo operator

O. M. Ogunmiloro, S. E. Fadugba, E. O. Titiloye

DOI: https://doi.org/10.23939/mmc2021.03.432

pp. 432–443

Universal mathematical model of asynchronous machine as an element microgrid in smart grid

Petro Gogolyuk, Oksana Hoholyuk, T. A. Kutsyk

DOI: https://doi.org/10.23939/mmc2021.03.444

pp. 444–453

Influence of the uniaxial stress $p_2$ and transverse fields $E_1$ and $E_3$ on the phase transitions and thermodynamic characteristics of GPI ferroelectric materials

R. R. Levitskii, I. R. Zachek, A. S. Vdovych, O. B. Bilenka

DOI: https://doi.org/10.23939/mmc2021.03.454

pp. 454–464

Mathematical modelling to industrial repair and maintenance policy system for its reliability

J. Bhatti, N. Bhardwaj, S. Kumar

DOI: https://doi.org/10.23939/mmc2021.03.465

pp. 465–473

Method of integral equations in the polytropic theory of stars with axial rotation. II. Polytropes with indices $n>1$

M. V. Vavrukh, D. V. Dzikovskyi

DOI: https://doi.org/10.23939/mmc2021.03.474

pp. 474–485

Synchronization of time-varying time delayed neutral-type neural networks for finite-time in complex field

N. Jayanthi, R. Santhakumari

DOI: https://doi.org/10.23939/mmc2021.03.486

pp. 486–498

Mathematical modeling of fluid flows through the piecewise homogeneous porous medium by R-function method

O. R. Podhornyj, M. V. Sidorov

DOI: https://doi.org/10.23939/mmc2021.03.499

pp. 499–508

Mathematical modeling bringing the operation of air split conditioners heat pumps to the same internal temperature conditions

V. Yo. Labay, V. Yu. Yaroslav, O. M. Dovbush, A. Ye. Tsizda

DOI: https://doi.org/10.23939/mmc2021.03.509

pp. 509–514

Modeling throttle bridge measuring transducers of physical-mechanical parameters of Newtonian fluids

Ye. P. Pistun, H. F. Matiko, H. B. Krykh, F. D. Matiko

DOI: https://doi.org/10.23939/mmc2021.03.515

pp. 515–525

The extended nonsymmetric block Lanczos methods for solving large-scale differential Lyapunov equations

L. Sadek, H. Talibi Alaoui

DOI: https://doi.org/10.23939/mmc2021.03.526

pp. 526–536

Caputo fractional reduced differential transform method for SEIR epidemic model with fractional order

S. E. Fadugba, F. Ali, A. B. Abubakar

DOI: https://doi.org/10.23939/mmc2021.03.537

pp. 537–548

Image restoration and contrast enhancement based on a nonlinear reaction-diffusion mathematical model and divide & conquer technique

K. Alaa, M. Atounti, M. Zirhem

DOI: https://doi.org/10.23939/mmc2021.03.549

pp. 549–559

Forecasting economic result of business logic improvements using Game Theory for modeling user scenarios

Oleg Kuzmin, Nataliia S. Stanasiuk, Dmytro Berdnik, O. Gaiduchok

DOI: https://doi.org/10.23939/mmc2021.03.560

pp. 560–572